I have 2 16-46pc+'s for sale. The are both in excellent condition. They have about 1-1/2 yrs left on the warranty. One of them has a brand new driver as of a month ago as it just didn't sound quite right and with SVS's exceptional customer service, no questions asked they replaced it for me. If you are into organ music or just want to know that you are getting every ounce out of your movies than these are the subs for you. I have the original boxes for them along with the port plugs, but don't know why you'd want them tuned lower. The WAF has been hounding me lately as they are bugging her more and more so I am looking to possibly replace them with a pb2+. 1350+ shipping.